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Mineralogical and chemical composition of petrologic end members of Alberta oil sands

机译：艾伯塔省油砂岩石学末端矿物的矿物学和化学组成

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摘要

The Alberta oil sands ores are a combination of four petrologically different kinds of rocks, called "end members", deposited in marine and estuarine sedimentary environments. The combination of the different end members affects the properties of the oil sands. Applying organic solvents for bitumen extraction from the oil sands is an alternative to the current commercial hot water extraction process. Certain minerals (mainly clay minerals) in the oil sands may affect processability of the ore during non-aqueous extraction. The aim of the present study was to perform mineral and chemical characterization of the four end members in order to better understand the mineralogical and geochemical factors affecting bitumen extraction and subsequent solvent recovery from the extraction tailings. The as-received end members and their different size fractions were examined using XRD, QXRD, FTIR, ICP-MS and C, H, N and S content analysis. The results revealed variable amounts of toluene insoluble organic carbon in the samples after bitumen removal. The amount was higher in the finer size fractions, indicating its association mainly with the clay minerals. Bitumen removal was the most effective in the coarse grained quartz-rich samples containing a minimal amount of the clay minerals. The four end members consisted of quartz, clay minerals (kaolinite, illite, mixed layer illite-smectite and chlorite), carbonates (calcite, dolomite and siderite), K-feldspar, TiO_2 minerals (anatase and rutile) and pyrite. The highest relative amount of mixed layer illite-smectite was found in the finest fractions (＜0.2 μm). The expandability (S_(xrd)) of illite-smectite was 10 ±2%. The quantitative mineralogical analysis correlated well with chemical composition analysis of the petrologic end members of the oil sands.
机译：艾伯塔省的油砂矿是沉积在海洋和河口沉积环境中的四种岩石学上不同种类的岩石（称为“末端成员”）的组合。不同端部件的组合会影响油砂的性能。使用有机溶剂从油砂中提取沥青是目前商业热水提取方法的一种替代方法。油砂中的某些矿物（主要是粘土矿物）可能会在非水提过程中影响矿石的可加工性。本研究的目的是对四个端部成员进行矿物和化学表征，以更好地了解影响沥青提取和随后从提取尾矿中回收溶剂的矿物和地球化学因素。使用XRD，QXRD，FTIR，ICP-MS以及C，H，N和S含量分析检查了所接收的末端成员及其不同的大小分数。结果表明，除去沥青后，样品中甲苯不溶性有机碳的量可变。细粒级分的含量较高，表明其主要与粘土矿物有关。在含有少量粘土矿物的粗粒富含石英的样品中，沥青去除最为有效。四个端部成员包括石英，粘土矿物（高岭石，伊利石，伊利石-绿土和绿泥石混合层），碳酸盐（方解石，白云石和菱铁矿），钾长石，TiO_2矿物（锐钛矿和金红石）和黄铁矿。混合层中伊利石-蒙脱石的相对含量最高，含量最高（<0.2μm）。伊利石-蒙脱石的膨胀性（S_（xrd））为10±2％。定量矿物学分析与油砂岩性端部元素的化学成分分析密切相关。

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  • 来源
    《Fuel》 |2013年第11期|148-157|共10页
  • 作者

    Marek Osacky; Mirjavad Geramian; Douglas G. Ivey; Qi Liu; Thomas H. Etsell;

  • 作者单位

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada Faculty of Natural Sciences, Comenius University, Mlynska dolina, 84215 Bratislava, Slovak Republic;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada;

    Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 2V4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Oil sands; Petrologic end members; Clay minerals; Mineral composition; Elemental analysis;

    机译：油砂;石油最终成员;粘土矿物;矿物成分;元素分析;

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